\name{cens.q}
\alias{cens.q}
\title{
Censored Inverse Cumulative Probability Density Function of a gamlss.family  
Distribution}
\description{
Creates the inverse cumulative density function from a current \code{\link[gamlss.dist]{gamlss.family}} 
distribution suitable for censored or interval response variable data.
This is a dummy function identical to the uncensored one but it is needed for 
consistency in centile estimation from censored data. 
}
\usage{
cens.q(family = "NO", ...)
}

\arguments{
  \item{family}{ a \code{\link[gamlss.dist]{gamlss.family}} object, which is used to 
          define the distribution and the link functions of the various parameters. 
          The distribution families supported by \code{gamlss()} can be found in 
          \code{\link[gamlss.dist]{gamlss.family}}.}
  \item{\dots}{for extra arguments }
}
\details{
 This is dummy function, used only to calculate centiles from censored response 
 variable.
 This function is not supposed to be used on its own but is used by the function 
  \code{gen.cens}.
 }
\value{
 Returns a modified q family function.  
The argument of the original function q function are the same.  
}
\references{Rigby, R. A. and  Stasinopoulos D. M. (2005). Generalized additive models for location, scale and shape,(with discussion), 
\emph{Appl. Statist.}, \bold{54}, part 3, pp 507-554.

Stasinopoulos D. M., Rigby R.A. and Akantziliotou C. (2006) Instructions on how to use the GAMLSS package in R.
Accompanying documentation in the current GAMLSS  help files, (see also  \url{http://www.gamlss.com/}).

Stasinopoulos D. M. Rigby R.A. (2007) Generalized additive models for location scale and shape (GAMLSS) in R.
\emph{Journal of Statistical Software}, Vol. \bold{23}, Issue 7, Dec 2007, \url{http://www.jstatsoft.org/v23/i07}.
 }
\author{ Mikis Stasinopoulos \email{d.stasinopoulos@londonmet.ac.uk} and Bob Rigby \email{r.rigby@londonmet.ac.uk} }
\note{For an example see \code{gen.cens()}}
\seealso{ \code{\link{cens.d}}, \code{\link{cens.p}}, \code{\link{gen.cens}} }
\examples{#see the help for function cens for an example}

\keyword{distribution}
\keyword{regression}
